It's a full 15-game MLB slate on Sunday, August 16, with the action beginning when the Baltimore Orioles take on the Tampa Bay Rays at 12:15 p.m. ET on Peacock. Right now, you can claim a $20 bonus and trade on the game with the Polymarket referral code ACTION.
Click our sign-up module below to begin the registration process. Once complete, make a $10 deposit to unlock the $20 bonus, which you can use for Orioles vs. Rays or any MLB game on Sunday.
Orioles vs. Rays is far from the only standout game on Sunday's schedule. Cardinals vs. Cubs highlights the afternoon window, starting at 3 p.m. ET on ABC. Sunday Night Baseball concludes the day with Mariners vs. Astros at 7:20 p.m. ET on NBC.
Don't miss your chance to use the Polymarket promo code ACTION and unlock a $20 bonus in these states: AK, AL, AR, CA, CO, CT, DC, DE, FL, GA, HI, IA, ID, IN, KS, KY, LA, ME, MN, MO, MS, NC, ND, NE, NH, NJ, NM, NY, OK, OR, PA, RI, SC, SD, TN, TX, UT, VA, VT, WA, WI, WV, and WY.
Use Polymarket Referral Code ACTION for Orioles vs. Rays Prediction
The Polymarket referral code ACTION offers an excellent welcome bonus, letting you make an Orioles vs. Rays prediction. As one of the best prediction market promos, Polymarket only requires a $10 deposit to unlock the $20 bonus.
The Rays have been one of the best teams in the AL this season, while the Orioles remain in the wild-card race. Still, I think Baltimore could pull off the upset in the third game of this series because of the pitching matchup.
Orioles vs. Rays Prediction: Orioles ML (43%): Trevor Rogers gives Baltimore a clear starting edge on the mound, boasting a steady 4.21 ERA while consistently pitching deep into games and suppressing damage. With Freddy Peralta struggling with run containment this season, the Orioles offer strong value to pull off the victory behind Young’s steady arm.
Let's say you make a $10 trade on my Orioles vs. Rays prediction. If you win, you get a $22.59 payout. If you lose, you lose the $10 stake, but still earn the $20 bonus from this welcome offer.
Take advantage of one of the best prediction market apps and secure the $20 bonus offer. Use the Polymarket referral code ACTION to trade on Orioles vs. Rays now.
How to Sign Up for Polymarket on Sunday, August 16
- Download the app: Install Polymarket on your iPhone or Android device through the official mobile app store.
- Select “I Have a Referral Code”: During registration, enter the Polymarket referral code ACTION to activate the promo.
- Create your account: Register using your Apple or Google credentials.
- Verify your identity: Complete the age and identity verification process by submitting your phone number and personal details.
- Deposit at least $10: Make a qualifying first-time deposit of $10 or more to unlock the $20 bonus credits.
- Start trading: Once funded, you can use your balance on any available market on the platform. Before placing a trade, use an odds converter to compare implied probabilities and identify potential value.
Users in states with no regulated options still qualify here, so check our guide to sportsbooks by state and our breakdown of where sports betting is legal to see how your market compares before you deposit.
18+ Only. Restrictions and eligibility requirements apply. Not available in all jurisdictions. Trading is risky. 100% loss can occur. See http://polymarket.us/tos for more information. The Polymarket US App serves as an independent software provider and affiliate of Polymarket US and Polymarket Clearing, the CFTC-regulated derivatives exchange and clearing organization. Not available in AZ, IL, MA, MD, MI, MT, NV, and OH.














































